Title:
Ｆｅ基合金組成物、軟磁性粉体、複合磁性体、及び軟磁性粉体の製造方法
Document Type and Number:
Japanese Patent JP6531979
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a soft magnetic powder providing high real number magnetic permeability as well as low imaginary number magnetic permeability to a composite magnetic body by oriented dispersion, an Fe-based alloy composition therefor, a composite magnetic body by oriented dispersing the soft magnetic powder and a manufacturing method of the soft magnetic powder.SOLUTION: An Fe-based alloy composition contains, by mass%, Si:1.5 to 14%, Cr:2 to 6%, Al:0.1 to 4%, P:0.02 to 1% and the balance Fe with inevitable impurities. A soft magnetic powder is a flat alloy powder having an alloy composition of the Fe-based alloy composition and has average of aspect ratio of particle diameter to thickness of 100 or more. A manufacturing method of the soft magnetic powder includes a process of flattening process after obtaining an alloy powder by atomizing alloy molten metal consisting of the Fe-based alloy composition and applying a particle diameter adjusting heat treatment on the same. A composite magnetic body is by oriented dispersion in a matrix material with fixing a flattening direction of the flat alloy powder.SELECTED DRAWING: None
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Inventors:
Mikiko Tsutsui
Large Saki Hanako
Large Saki Hanako
Application Number:
JP2015125726A
Publication Date:
June 19, 2019
Filing Date:
June 23, 2015
Export Citation:
Assignee:
Daido Steel Co., Ltd.
International Classes:
C22C38/00; B22F1/00; B22F9/08; C21D6/00; H01F1/147; H01F1/20
Domestic Patent References:
| JP2001032052A | ||||
| JP61272352A | ||||
| JP2002080948A | ||||
| JP2010196123A | ||||
| JP2009266960A |
Foreign References:
| CN104036901A |
Attorney, Agent or Firm:
Patent business corporation Mutsuki Partners